Electric discharge vessel



March 28, 1939. o. BAlER ELECTRIC DISCHARGE VESSEL Filed Jan. 30, 1937 w w m m m w 1 w Patented Mar. 28, 1939 UNITED STATES PATENT OFFICE 2,151,885 ELECTRIC DISCHARGE VESSEL Otto Baler, Berlin-Reinickendorf, Germany, assignor to C. Lorenz Aktiengesellschaft, Berlin- Tempelhof, Germany, a company Application January 30, 1937, Serial No. 123,204

In Germany January 30, 1936 g 4 Claims. (Cl. 250--27.5)

In the manufacture of electric discharge dehigher temperatures than is required for melting vices having vessels, ceramic materials have come the glass seal. into use from which properly proportioned parts What is claimed is:

are preferably elTected in a furnace. said parts.

he invention is described hereafter by way of 2. In an electric discharge device, two parts of example, reference being had to the accompanyceramic material so shaped that when assembled ing drawing which is a sectional view of an electhey form a vessel enclosed on all sides, electron tube as provided in accordance with the trodes projecting from. each part within said vesinvention. sel, and a seal of glass melting at lower tem- The vacuum vessel consists of a cylindrical peratures than said ceramic material covering the part I formed integral with an end Wall or botjuncture of said parts. tom 2 by any customary method and has a cover 3. In an electric discharge device, a hollow 7. Bottom 2 carries two conductors 3, 4 fastened body of ceramic material open on one side, electo electrodes 5, 6. Cover 7 carries two conductrodes mounted on said body and projecting tors 8, 9fixed to electrodes l0, H. The electrodes within the chamber formed by the body, a are shown in dotted lines and in a purely diaceramic stopper for the open side of said body,

the invention. Cover 7 has a central projection said chamber, and a glass seal covering the junc- M which fits the inside of the cylinder i, this ture of said body and stopper. being attained by machining or grinding the 4. In an electric discharge device, a. cylinder of perimeter I 2 of the pro ection l4. ceramic material closed on one side, electrodes these without the aid of special means such as a shoulder against which the edge of the cylinder Preferably, cover 1 is fastened to cylinder 1 by. jecting within said cylinder, and an outside glass 3, the melting being eifected in a seal surrounding the cylinder and said shoulder furnace. In performing this the ceramic parts at their juncture. can not get warped since they have been fired at OTTO BAIER. 

